José Roberto Castilho Piqueira

Bipartite Containment Control of Nonlinear Fractional-Order Multi-agent Robotic Systems with Mixed Delays Under Hostile Disturbances

Ammar Alsinai, José Roberto Castilho Piqueira, Azmat Ullah Khan Niazi, Saadia Rehman et autres

sa, Mozambique, pk (code pays fourni par la source)

Optimising consensus efficiency in autonomous vehicle platoons through nonlinear distributed control

Ammar Alsinai, José Roberto Castilho Piqueira, Waqar Ul Hassan, Azmat Ullah Khan Niazi et autres

In this paper, we introduce a pioneering platoon control algorithm tailored explicitly for autonomous vehicles under time communication delay and disturbance, aiming to address the dynamic interaction observed between adjacent vehicles. Through the development of a specialised nonlinear function, we effectively capture …

sa, Mozambique, pk (code pays fourni par la source)

Dynamic nonlinear control strategies for resilient heterogeneous vehicle platooning and handling Byzantine attacks in communication networks

Ammar Alsinai, José Roberto Castilho Piqueira, Waqar Ul Hassan, Azmat Ullah Khan Niazi et autres

This paper addresses the challenges of maintaining stability in heterogeneous vehicle platooning under the influence of communication disruptions caused by Byzantine attacks within a leader-follower framework. To enhance resilience, we propose a nonlinear control strategy tailored for a third-order heterogeneous dynamic model, …

in, lb, Mozambique, pk (code pays fourni par la source)

Robust Multivariable Controller Design for Oil Pipeline: Analysis and Synthesis of $H_{\infty}$ Controller

Rodrigo Nobre Camargo Nascimento, Edwin Red Estofanero Larico, Claudio García, José Roberto Castilho Piqueira et autres

The paper presents the design of an H-infinity controller for controlling oil pipeline systems, focusing on pumping petroleum products between fuel installations. Due to the nonlinear characteristics of the pipeline system, including variable operational parameters such as fluid viscosity and specific mass, …

Identification and H-Infinity Control for a pH Neutralization Process

Edwin Red Estofanero Larico, Andrei Araujo Felix, José Roberto Castilho Piqueira

This paper presents the experimental results of the S/KS mixed sensitivity H-Infinity controller implemented in a real pH neutralization plant. For this control system, three variables were considered for control: level, temperature, and pH. To design the H-Infinity controller, linear models for …

br (code pays fourni par la source)

Model-Free Sliding Mode Control Applied to a Gyroscope System

Gabriel Pereira das Neves, Bruno Augusto Angélico, José Roberto Castilho Piqueira

br (code pays fourni par la source)

Comparing LQG/LTR and the SDRE Techniques for Hybrid Fully-Connected PLL Network Control

Átila Madureira Bueno, Ângelo Marcelo Tusset, Diego Paolo Ferruzzo Correa, José Roberto Castilho Piqueira et autres

Synchronization plays an important role in telecommunication systems and integrated circuits. The Master-Slave is a commonly used strategy for clock signal distribution. However, due to the wireless networks development and the higher operation frequency of integrated circuits, the Mutually-Connected clock distribution strategies …

br (code pays fourni par la source)

Engenharia das catástrofes: entre o determinístico e o imponderável

João F. Justo, José Roberto Castilho Piqueira

br (code pays fourni par la source)

Architectures, stability and optimization for clock distribution networks

Rodrigo Carareto, Fernando Moya Orsatti, José Roberto Castilho Piqueira

br (code pays fourni par la source)

Multiple synchronous states in static delay-free mutually connected PLL networks

Fernando Moya Orsatti, Rodrigo Carareto, José Roberto Castilho Piqueira

br (code pays fourni par la source)

The synergetic modulation of the excitability of central gray matter by a neuropeptide: two protocols using excitation waves in chick retina

Vera Maura Fernandes de Lima, José Roberto Castilho Piqueira, Wolfgang R. L. Hanke

The isolated chick retina provides an in vitro tissue model, in which two protocols were developed to verify the efficacy of a peptide in the excitability control of the central gray matter. In the first, extra-cellular potassium homeostasis is challenged at long …

br, de (code pays fourni par la source)

Two-way master-slave double-chain networks: limitations imposed by linear master drift for second order PLLs as slave nodes

José Roberto Castilho Piqueira, S.A. Castillo-Vargas, L.H.A. Monteiro

Distribution of precise time signals among the nodes of a network is a fundamental requirement for digital transmission and switching systems in telecommunication and control. Cideciyan et al., (1987) conjectured that two-way master-slave (TWMS) networks present, in the general case, a better …

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